5/16 SS Round Head Machine Screw (INCH)
ASME B18.6.3 5/16" stainless steel cheese head screws in A2 (304) grade with slotted drive. Inch-dimensioned narrow head for tight spaces at 5/16-inch diameter.
Specification
#
Standard
ANSI/ASME B18.6.3
Thread
Coarse (standard)
Material
Stainless Steel 304 (A2)
Grade
A2-70
Stock
In stock (304). Grade 316 available against bulk order
Head Type
Round head
Drive Type
Slotted
Thread Class
Class 2A per ASME B1.1
Finish
Plain/Passivated (stainless steel)
Dimension
#
Size (inch)
Thread Dia (min-max inch)
Pitch (TPI)
Length (inch)
Thread Length (inch)
#6
0.138-0.138
32
0.50
0.50
#8
0.164-0.164
32
0.625
0.625
#10
0.190-0.190
24
0.75
0.75
1/4"
0.250-0.250
20
1.00
1.00
5/16"
0.3125-0.3125
18
1.25
1.25
- All dimensions in inches, tolerance +/- 0.001 inch. Additional dimensions available on request.
Benefits
#
The 5/16-inch stainless steel round head machine screw addresses fastening in imperial-dimensioned crowded panels. A2-70 grade provides 700 MPa tensile strength with inherent corrosion protection. The slotted drive eliminates the need for specialized driver bits. Simple head geometry keeps costs lower than cross-recessed alternatives for high-volume inch-specification assemblies.
Common Applications
#
5/16" SS round head machine screws (inch) are specified for US-spec space-constrained fastening:
- US-spec electrical panels
- Legacy machinery wiring
- Marine instrumentation (inch)
- Industrial control panels (inch)
- Lighting fixtures (inch spec)
Read Me
| Standard | ANSI/ASME B18.6.3 |
| Thread | Coarse (standard) |
| Material | Stainless Steel 304 (A2) |
| Grade | A2-70 |
| Stock | In stock (304). Grade 316 available against bulk order |
| Head Type | Round head |
| Drive Type | Slotted |
| Thread Class | Class 2A per ASME B1.1 |
| Finish | Plain/Passivated (stainless steel) |
| Size (inch) | Thread Dia (min-max inch) | Pitch (TPI) | Length (inch) | Thread Length (inch) |
|---|---|---|---|---|
| #6 | 0.138-0.138 | 32 | 0.50 | 0.50 |
| #8 | 0.164-0.164 | 32 | 0.625 | 0.625 |
| #10 | 0.190-0.190 | 24 | 0.75 | 0.75 |
| 1/4" | 0.250-0.250 | 20 | 1.00 | 1.00 |
| 5/16" | 0.3125-0.3125 | 18 | 1.25 | 1.25 |
